Question about Presto HeatDish Compact Heater

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Buzz Sound when plugged in

I turned the unit to off unplugged it moved it from one room to another and now the buzzer sounds when i attempt to increase the temperature.

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It may be the level sensor, as if it has tipped over. If it runs first and then the buzzer sounds, it could be that it is overheating due to poor airflow or it is near the supply register while your furnace is on. Hope this helps!

Posted on Dec 10, 2008

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RE: Presto Heat Dish buzzer going off


I almost threw my heater out! I cleaned this morning with Window Cleaner and it works just fine now. It was just dust. I cleaned the round metal area not the coils.

Hope this helps.

Emailed Presto about replacing the buzzer and here is the answer I got:


There is no such part. Buzzer sounds when heater:
- is tipped
- rests uneven on floor
- is too close to furniture or wall
- has too much dust on parabolic dish
The most common reason is that the parabolic dish is dusty.
To clean the heater:
1. Unplug the heater and clean it when it is cool
2. Spray a cloth with an all-purpose cleaner such as 409
3. Wrap the cloth around a long handle such as a wooden spoon
4. Wipe between the grate from the outer edge to the center
If you have further questions, please let me know. Or call us at 1-800-877-0441 Monday through Friday 8:00 a.m. to 4:30 p.m. Central Time.



Jan 11, 2010 | Presto HeatDish Compact Heater

2 Answers

How do we clean the inside of the dish?


This is from Presto

Buzzer sounds when heater:
- is tipped
- rests uneven on floor
- is too close to furniture or wall
- has too much dust on parabolic dish
The most common reason is that the parabolic dish is dusty.
To clean the heater:
1. Unplug the heater and clean it when it is cool
2. Spray a cloth with an all-purpose cleaner such as 409
3. Wrap the cloth around a long handle such as a wooden spoon
4. Wipe between the grate from the outer edge to the center
If you have further questions, please let me know. Or call us at 1-800-877-0441 Monday through Friday 8:00 a.m. to 4:30 p.m. Central Time.

Jan 08, 2010 | Presto HeatDish Compact Heater

1 Answer

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There is a round sensor under the heating elements which sets off the alarm when it thinks it is overheating on the PRH11. Unfortunately, a dirty sensor will fool it into reacting like it is overheated. I cleaned the sensor which was dark and revealed it to be a lighter goldish maybe brass in its original color. If your sensor is dark, it will continue to trip the alarm for overheating and will need to be replaced. If you were lucky like I was and can clean it, the problem should be resolved and it will operate like normal until it gets dirty again. This procedure lasted for 3 days and I had to clean it again. I believe I left the dirt on too long and now my sensor has tarnished plus I live in a rural area with significant dust requiring this recleaning every few days. I only used a damp paper towel with water to clean. Cleaning may work better with alcohol or a tarnish removal solution.

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Sounds like the motor start capacitor is gone south on you. you can get them at a motor rebuilder.

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sounds to me like you have a fan blade hitting something inside the unit, or the motor is going bad, thats the only moving parts to the unit unless it has a sweeping mode, moves from side to side, if it doesnt have that, then its your fan motor or blade, you probably need to replace the motor or the whole unit, as they are fairly inexspecive, but its your call, look inside the unit to see if anything is in there that might be making the noise as well, best of luck, hope that helped

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11 Answers

Presto Heat Dish buzzer


for those of you that want to void your warranty or just dont care there is a fix for the buzzer problem.
If you take the three screwws in the back and the one in the top next to the heat selector switch the steel dish portion will come away from the dish back. located on the bottem of the back inside panel there is a small disk looking tilt switch that has one red wire on one end and on the other a white and two black wires. remove this component and all wires from it. take all the wires from it and remove the ends exposing solid wire. for this modification you will need a philips driver wire stripper and cutter and one medium size wire nut available at almost any hardware store. take all the loose wires and wrap them together and place the wire nut on them. be sure to tuck the wire someplace away from the dish portion when going back together. put the unit back together and plug it in and "presto" you have no anoying buzzer anymore and the heater wont go on and off like it used to. this seems to be a comen problem due to lack of insulation and poor design on heatdishes part. hope this solved your problem

Nov 10, 2008 | Presto HeatDish Compact Heater

1 Answer

Presto Heater Model 0790801


Based on what I have read, it is not repairable without re-wiring the heater, which Presto will not assist you in doing. What sometimes works (only sometimes in my case) is to cut enough of the cage off to get your hand inside and thoroughly clean the dish. Use a wire cutter to remove enough of the cage wires to get your hand inside. Usually works for awhile but not a long-term solution.

Jan 31, 2008 | Presto HeatDish Compact Heater

3 Answers

Presto HeatDish


buzz? is this heater an infrared or are the heat coils exposed?

Oct 30, 2007 | Presto HeatDish Compact Heater

5 Answers

Presto HeatDish Problem


I rewired my heat dish. I UNPLUGGED THE HEAT DISH. I loosened the three screws on the back and removed them. Then I unclipped the dish at the bottom. The dish should be loose and the bottom section of the dish should be detached from the plastic casing. Look inside the casing at the bottom. There is a red cable attached to the buzzer (it’s the silver metallic piece). Detach the red cable from the buzzer. Now look directly behind the buzzer is a black wire that connects to the circuit next the buzzer. Attach the red cable to the female receptor foot the black cable. Plug it in and it should work fine. This will permantly disable the buzzer, SO YOUR HEATDISSH NOW LOINGER HAS A WARNING SYSYTEM. IF YOU TURN YOUR HEATER OVER THE BUZZER DOES NOT GO OFF, THE BUZZER ALSO INDICATES OVERHEATING OF THE UNIT. SO BE CAREFULL. MAKE SURE THE UNIT IS UNPLUGGED WHEN WORKING ON IT. GOOD LUCK AND BE SAFE

Oct 19, 2007 | Presto HeatDish Compact Heater

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